Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1992-06-05
1994-01-04
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72149, 72702, 72369, B21D 704
Patent
active
052750310
ABSTRACT:
A bend correction apparatus for bending a workpiece subject to springback, the apparatus having a pressure die for holding a workpiece, a radius die for providing a radius form about which the workpiece is bent, and a clamping die for engaging and bending the workpiece relative to the pressure die and about a portion of the radius die. A microprocessor moves the clamping die between a bend angle position in which the workpiece is bent about the radius die to a predetermined angle relative to the clamping die and a relieved position in which the clamping die is not bending the workpiece. A sensor, movable conjointly with the radius die, engages the workpiece in a springback position upon rotation of the radius die toward the workpiece and sends a signal to the microprocessor upon contact with the workpiece. The microprocessor then determines a rebend angle to achieve the desired degree of bend in the workpiece and moves the clamping die means and radius die to the rebend angle to bend the workpiece to that angle and storing the rebend angle for bending subsequent workpieces.
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Morgan Billy W.
Whiteside James A.
Larson Lowell A.
McKeon Michael J.
Stark Manufacturing, Inc.
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